Blood Vessels
All the organs of the human body are connected to blood circulatory system. The organs connected to blood circulatory system are head and neck, heart, liver, intestine, kidney, arms, leg. The function of blood vessels is to deliver blood to the organs and tissues in the body. Each type of blood vessel serves a different function:
Arteries: These strong, muscular blood vessels carry oxygen-rich blood from the heart to the body.
Arterioles: Arteries branch into smaller vessels called arterioles. Both arteries and arterioles are very flexible. They get bigger or smaller to help maintain your body's blood pressure.
Capillaries: These tiny blood vessels have thin walls. Oxygen and nutrients from the blood can move through the walls and get into organs and tissues.
Do you know? The Greek name for the heart is cardia from which we have the adjective cardiac. The Latin name for the heart is cor from which we have the adjective coronary.
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